Stove-pipe damper



N. ELDRED.

St'oveppe Damper.

No. 58,233. Patented sept; 25, 1866.

M656@ Inn/,71307 UNITED STATES PATENT OEEIOE;V

NORMAN J. ELDRED, OE OHIOAGO, ILLINOIS.

STOVE-PIPE DAM PE R.

Specification foiming part of Letters Patent No. 58,233, dated September 25, 1866.

Io all whom it may concern:

Be it known that l, NORMAN J. ELDRED, of Chicago, in the State of Illinois, have invented certain new and useful Improvements in Stove-Pipe Dampers, and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being' had to the accompanying drawings and letters marked thereon, making a part of this specilication.

In the drawings, A represents a metallic disk, which is made large enough, so that when turned crosswise iu a stove-pipe to form a damper it fits snugly in said pipe, filling up its throat. This disk is provided with stout journals, which play in openings in the stovepipe made to receive them, one ot' said `journals being provided with a handle with which to operate the disk.

Through the center of the disk is made a square, or nearly square, openin g, as shown in Figure 3.

B represent-s a metallic hoop, which is made as broad and a little less in diameter than the length of the opening in the disk, so that yit will lit snugly in the said opening, as shown.

The hoop is provided with smallopenings in its periphery, through which pass the lugs or projections m won the disk A. These lugs keep the hoop in its place.

C represents a small rod, which passes through the hoop centrally and through the center of the opening in the disk.

D represents a damper-plate, which has a hole through its center, through which passes the rod C. This dam per-plate is placed within the hoop B, and is made large enough to cover the opening in the disk, and plays up and down loosely upon the rod C.

It will be seen that when the damper is placed in the position shown in Fig. 1 the products of combustion will pass into the hoop, around the plate D, through the opening in the disk, and up around the upper rims of the hoop, and thence up the pipe. It the damper is turned up so that the edges of the disk will be iu a vertical position thc passage of the products of combustion are dii rect up the pipe. When the damper is turned over the plate D falls down upon the opening in the disk, and thus cuts oft the passage of the products entirely, leaving no draft up the pipe.

Having thus fully described my invention, what'I claim is- The disk. A, with lugs a' a' cast upon it, and a square hole or opening cast in it, in which opening is placed a hoop, B, its axis being transverse to that of the disk, together with the damperplate D, operating loosely between one side ot' the disk and the hoop,.the several parts being arranged and construct-ed as and for the purpose herein specitied.

In witness that I claim the foregoing I have hereunto set my hand in the presence of witnesses.

NORMAN J. ELDRED.

Witnesses:

JOSEPH EATON, HENRY BRADLEY. 

